Drop a corrupted .docx, .xlsx, .pptx, .odt or SQLite file and get your text back — recovered entirely in your browser. Nothing is ever uploaded. Free for everyone.
The file is corrupted. The words are usually still in there.
When Word says a document is unreadable, most of the text is typically intact — the container is broken, not the content. Mendery scans the raw bytes of corrupted Office documents for local file signatures, keeps whatever partial DEFLATE output can be salvaged, and rebuilds an openable .docx. It does the same for damaged SQLite databases, scavenging surviving pages directly.
DSL4 Digital engineers the browser-based recovery engine and the no-upload security model. Viva Grafix designed the product around that constraint: users need to understand what can be recovered, what cannot and why their files never leave the device.
Recovery tooling is a trust cliff. DSL4 Digital’s architecture removes the service from the file path; our design makes that privacy guarantee concrete before a user begins.
Recovers readable text from broken .docx, .xlsx, .pptx and .odt files and rebuilds a fresh, openable document around it.
Page-level scavenging pulls surviving records straight out of damaged database files — to our knowledge the first fully in-browser recovery of corrupted SQLite.
The CSP declares connect-src ’none’: the browser itself forbids the page from transmitting anything, anywhere.
DSL4 Digital’s format engineering is the context for a recovery interface that must be exact about both capability and limitation.
ZIP recovery parses local file headers directly and ignores the corrupted central directory — the part of the file that usually dies first.
DSL4 Digital chose vendored MIT-licensed fflate instead of the native DecompressionStream, because the native API discards queued output when a stream errors mid-way — precisely the moment recovery matters.
The test oracles are real tools — textutil and node:sqlite verify that recovered files actually open, not merely that bytes were produced.
Mendery is deep, unglamorous engineering from DSL4 Digital, presented by Viva Grafix as a tool users can trust: MIT-licensed, free, and structurally incapable of reading your files.